Grinding wheel



E. A. CHASE GRINDING WHEEL July 12, 1927. 1,%3s,6o1

- FiledJuly 1523 2 S heets-Sheet 1 ,.soniclde'gree ofisnccess; v One iobject o'finy: invention relates-to the provisionoi algi'ri-nding wheel forsuclr'pu'n poses,irigidly attachedto: its drivingshaft enr vnrne Appncam mar ul 'z', 11923} -serin. No. 648,875.

' 7 This 'inyentionfrelates: "t 5 wheel a 3 grinding granite and other: similar amen-a1. flVhile .capablef of general application, this' "hewi wheelis particularly adapted for grinds'oithathit: may be caused to operate at a "definite and predetermined angle. '1

. Another ob 'eot site provide a center feed for jwheel :thn's] rigidly 1 supported, with novel features of adaptation by wliichfla feed 1 near" the. aXis -oftlie wlieelgis aecoinplished without theiiise of a-hollowshaft.

A third fea tnfe I of my. T invention relates to improved details:ofconstruction by which. a iwheel inayrbe ly'ery ieasily built up from relatively. simple "detail parts and in which repairs inaybe'c'very easily accomplished V n'lents and '(fonibinations oiparts i which will f be hereinafter described and; more, particn- V larlylpointed ontinnthe appended! claims. v H

shownin th'e drawings-in-whichf;

f Fig. 5 is a perspective View of a portion of I va straight rectang-nlarly groovedibar from: V v p which a grinding/ring maybe conveniently forrned. h Referring to thedrawings, I have shown a grinding wheel, of r1 sir'nple c'onstruction comprising a headgori i top' plate having" a r 7 rings 14 secured serewsr15. V, 1

For general purposes, it isfound desirable r mak the ring 1row ug r n r s Fig. 1' is; 1 plan view of" my improved;

1 Fig, l a erspective views of one of the grindingor ironing r ngsyand a: convenient method or forniihgth'ese rings;

; suggested inythese figures; a straight rectangnlari bar? 16; isfirst provided with'v shaped grooves or-notches- 17- extending diagonally across the" bark and distributed.

Lessee? steel-and I} have illns'trated in- Figs. 4 and thus; groovedor 'notcl1ed ,.}it is out to the v reqnired' length" and the I bar is then;;b6nt to -=the circular form, shown in :Fig; 4; It; is,alsoiprovided-,wit11-;tapped sholesj' 18-"by I which it may; besecu'reclto ,the-lower-fiface of the ring holding plate .12..

A'iseries 'of bars ofdifferent, are naturally required to make each set'of con-s. centric .ringsnsfori'a grinding wheel. i W'henever the- -rin gsbec'om'e' too badly, worn, they For "the 'purpose of feeding the] steel shot or other abi 'asiveetollthe workat the centerso'fethe grinding; rings; l providejza series of are easily 'removedlandreplaced without any necessity for providing 'new'plates ?12 or v l1'eads '10.. I

helical 'feeding passages 20 in the hubpon,

tion' '11 ofthehead or top platef1Q.'.' Thesefeeding"passages-20 are substantially similar to* az-plnralityiof *innltipleinternal. screwv invention. further relates to; arrangethreads, square in cross section and disposed in 'av downwardly 'convergingrelatiOn as clearly indicated iirFigi 2'. The ribs or- 1 ridgesfs'eparating adjacent spaces or pas;

sages are inachined-atftheir inner edges; and". -forrn'a conicalxseat forfthetaperedjlower v, I

end-cf. a" drivesh'aft '22 by which the wheel I V r. a isk'supported in suitable bearings- 23; Fig.2 is a: sectiona elevation-thereof af Near its lower facegthe head 10 is: pro? v V g 1 1 v vided with :a recess 24: to receive awasher25 1 1 Fig.3 fls perspective v ew or the wheel I tapered end ofthe shaft 22. The washer 25 is recessed or. cut away at suitableportions of itsonterf: edge so that it does notobstruct the lowerends of the. passages .20.

Attheir' upper ends, the ribs between the: passages 20 are narrowed down to thin edges 28, as-shownin Fig. 3,1so thatshot0r abra 'sive maybe easily fedithereto and willx'not be widely scattered bycontact with arapidly 5 revolving wheel snrfa'ceL r a 'jAl'steelring' 30 (Fig; 2) is preferably segiving increased strength to that portion of the l nb wh'eretheleast stock remains after the formation "of the passages 20. It will lbe.

'notedtliatthe 'passages 20 converge down-f 1 as I cure'da ronnd' the upper end'of the 11111011,-

no V

ward and deliver the grinding material through a center opening 31 111 the ring holdlng plate 12.

Having described the details of constrnction of my improved grlndlng wheel, the

necessity for using a hollow shaft feed,

which isat EllltlYDGS objectionable and particularlyso in connection with grinding or ironing operations where the grinding mate rial, it raised above the shaft bearings, sooner or later works into the bearings with destructive effect.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is 1. In a grinding machine, ashaft, a wheel head rigidly secured thereto, and a plurality of concentric grinding rings secured to said head and provided with upwardly and rearwardly inclined pockets across the inner facesof said rings. V 2. A grinding wheel having a plurality of separately formed, concentric grinding rings detachably secured to its lower face and each ring having a series of V-shaped upwardly and rearwardly inclined grooves formed across its inner face. 7 i

3. A grinding wheel having a hub p01 tion formed with an opening therethrough designed to receivea shaft, and having a plurality of helical, downwardly-converging feed passages communicating with said tapered end portion and a grinding wheel rigidly seated thereon, the hub portion of said wlieelhaving a plurality of helical feeding passages, the inner faces of which are closed by said shaft and said passages being inwardly and downwardly directed toward the center of said wheel.

A, grinding machine comprising a shaf t and a grinding wheelrigidly attacheditherc to, theshaft engaging portion of said wheel having feeding passages formed therein adjacent said shaft; grinding rings mounted on the lowerface of said wheel each, provided with upwardly and rearwardly inclined pockets onthe inner face thereof, and said feeding passages being in communication with said rings.

6. A grinding machine comprising a shaft and a grinding wheel rigidly attached thereto, the shaft engaging portion of said wheel having a plurality of helical feeding passages formed therein open at their inner sides and said passagesbeing separated by ribs in said portion providing a tapered seat for said shaft; grinding rings mounted on the lower face of saidwheel, each provided with upwardly and rearwardly inclined pockets on the inner face thereof, and said feeding passages being in communication with said rings. M

7. In a grinding n'iachineya shaft having atapered end portion, agrindingwheel having a hub, said hub having a plurality of helical feeding passages formed therein open at their inner sides, said passages being separated by ribs in said huh providing a tapered seat for said shaft, said ribs heingnarrowed down to thin edges at their upper ends.

In testimony whereof I have hereunto aflixedlnysignature. a 

